Metformin Intolerance in African Americans

“I DON’T WANT METFORMIN”

When my patients get diagnosed with diabetes, the first medication I want to prescribe is metformin. Almost immediately, my patients pushed back, saying metformin is “a terrible medication” and, “isn’t there something else they can try first?”

I always wondered why there was so much resistance to trying metformin among my Black patients.

Metformin Intolerance in African Americans

METFORMIN IS POORLY TOLERATED BY AFRICAN AMERICANS

Metformin intolerance in African Americans is relatively common, with studies showing that approximately 20-30% of African American patients experience gastrointestinal side effects. These side effects can include nausea, diarrhea, and abdominal discomfort, which can impact adherence to the medication. Consequently, healthcare providers often need to consider alternative treatments or supportive measures to manage these symptoms effectively.

Insurance companies frequently “insist” that clinicians push metformin first as an inexpensive option that generally works well for diabetes.

CAUSE FOR METFORMIN INTOLERANCE

Metformin Intolerance in African Americans

Studies suggest that genetic variations, such as polymorphisms in the SLC22A1 gene, may contribute to metformin intolerance. These genetic differences can affect the absorption and metabolism of the drug, leading to an increased likelihood of adverse gastrointestinal effects. The adverse side effects include diarrhea (explosive at times), gasey stomach, irregularity, and nausea. Understanding these genetic predispositions can help healthcare providers tailor more effective treatment plans for African American patients.

By identifying patients with specific genetic variations, such as those in the SLC22A1 gene, doctors can choose alternative medications or adjust dosages to minimize adverse effects. We can also make a better argument to the insurance companies when they ask why we are not using metformin.

USE A SLOWER AND MORE DELIBERATE PACE

Some supportive measures include prescribing a lower starting dose of metformin and gradually increasing it to reduce gastrointestinal distress. Additionally, taking the medication with meals can help minimize side effects. In some cases, healthcare providers might recommend switching to an extended-release formulation of metformin, which is often better tolerated.

Patient education on medication adherence is crucial because it empowers individuals to manage their condition effectively and understand the importance of consistent medication use. By educating patients about potential side effects and how to mitigate them, clinicians can improve adherence and ensure better health outcomes. Additionally, informed patients are more likely to communicate openly about their experiences, allowing for timely adjustments to their treatment plan.

TOO MANY DOCTORS IGNORE THESE DIFFERENCES

Implementing a medication tracking app can help patients monitor their adherence and remind them to take their medication on schedule. Another effective method is using a pill organizer with daily compartments to keep track of doses taken. Regular follow-up appointments or check-ins with healthcare providers can also ensure that any issues with adherence are promptly addressed.

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    Greg Hall, MD is a physician, author, speaker, inventor, professor, and public health professional, specializing in urban health and the clinical care of African Americans. Dr. Hall’s extensive research in the care of African Americans lead to the development of GNetX Sequence Multivitamins a supplement developed to support African American needs. Most recently, Dr. Hall established the National Institute for African American Health, which is a nonprofit designed to promote health-related education, support students interested in a career in medicine, and serve as an advocate for African American patients. You can keep in touch with Dr. Hall by tuning into his Better Black Health Podcast where he covers Black American health topics.

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